Draegerwerk Aktiengesellschaft
20Patents
1Active
20Granted
32Portfolio score
Filing activity: Jun 7, 1985 → Jun 20, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4840227A | Process for producing a hollow fiber mass transfer module and module produced by this process | Emerging Cross-Sectional Technologies | 75 | Expired |
| US4825860A | Device for supplying anesthetic dispensing systems | Human Necessities | 19 | Expired |
| US4832018A | Filter case holder | Human Necessities | 16 | Expired |
| US4844059A | Method and apparatus for enriching respiratory gas with oxygen and delivering it to a patient | Performing Operations; Transporting | 16 | Expired |
| USD390967S | Wall-mounted supply unit for a medical workstation | General | 15 | Expired |
| USD390968S | Ceiling-mounted supply unit for a medical workstation | General | 14 | Expired |
| US4877329A | Method and apparatus for measuring the dew point of a gas | Physics | 13 | Expired |
| US4822572A | Chemical oxygen generator | Chemistry; Metallurgy | 12 | Expired |
| USD375158S | Anesthesia machine and work station | General | 12 | Expired |
| US4821568A | Method and apparatus for determining a measurable variable | Human Necessities | 10 | Expired |
| US4821711A | Protective breathing device | Human Necessities | 10 | Expired |
| US4811732A | Protective breathing apparatus having breathing air circulation | Human Necessities | 9 | Expired |
| US4856818A | Folded record medium and a blank for a record medium | Performing Operations; Transporting | 7 | Expired |
| US7385210B2 | Device for spectroscopy using charged analytes | Physics | 6 | Active |
| US4828590A | Filter arrangement | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4832714A | Device for the decomposition of a multicomponent gas and to a method of operating the system for the decomposition of gases | Chemistry; Metallurgy | 4 | Expired |
| US4853087A | Process and apparatus for producing a filter with multiple folds | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4848166A | Wearable air sampling device | Physics | 2 | Expired |
| USD347064S | Housing for an oxygen respirator | General | 2 | Expired |
| USD352008S | Housing for an adjustable timer | General | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.